The PSM (Power Seat Module) is connected to the CAN-bus. Which implies that this change requires modifications to the car's software. Which in turn requires not only VIDA, but also a live subscription to Volvo's software library. Something only the bigger workshops have.
To add to the issues, it's also required that the car's configuration, as it's stored in Volvo's servers, does allow for an after-market upgrade to powered seats. Otherwise, not even authorized Volvo workshops can download the required software to the car.
My advice is that you start with contacting a Volvo workshop and ask them if they are able to install the software which makes this work. If not, you can stop right there.
My guess is that it's not possible for them, because I've never seen any upgrade to powered seats on Volvo's web sites, and they usually list Everything you can buy.
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